O que fazer

Please, don't go
Listen to me a little more
Let me try to explain to you
Then I'll leave you alone
It wasn't like you thought
There's no one else
My heart has always been yours
Only yours, no one else
Chat at the bar, on the phone
Everyone has friends
Why fight, why suspect
If it's simple to understand
But if it's like this, if you really want the end
Know that I won't beg you
I may cry, but it will pass
Tell me, how to know which of us
Was at fault, who made more mistakes
If I messed up, so did you
But it's all right, I'll manage
Everything I did, it was out of love
I won't regret anything
If it's the end, what to do
If you know, then tell me